Fibonacci Numbers,

are a series of numbers,

that follow a pattern, Fibonacci was an Italian mathematician from the Republic of Pisa, considered to be "the most talented Western mathematician of the Middle Ages". The name he is commonly called, "Fibonacci", was made up in 1838 by the Franco-Italian historian Guillaume Libri, and this is the start of the sequence,

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, ...

The next number is found by adding up the two numbers before it.

The 2 is found by adding the two numbers before it (1+1) = 2

The 3 is found by adding the two numbers before it (1+2), = 3

And the 5 is (2+3), = 5

and so on, easy, so what happens if you put the sequence to music?

you get this, delightful.